import { login, getInfo } from '@/api/user';
import { getToken, setToken, removeToken } from '@/utils/auth';
import { resetRouter } from '@/router';

const getDefaultState = () => {
  return {
    token: getToken(),
    name: '',
    avatar: '',
    roles: [],
    agent: {}
  };
};

const state = getDefaultState();

const mutations = {
  RESET_STATE: state => {
    Object.assign(state, getDefaultState());
  },
  SET_TOKEN: (state, token) => {
    state.token = token;
  },
  SET_NAME: (state, name) => {
    state.name = name;
  },
  SET_AVATAR: (state, avatar) => {
    state.avatar = avatar;
  },
  SET_ROLES: (state, roles) => {
    state.roles = roles;
  },
  SET_AGENT: (state, agent) => {
    state.agent = agent;
  }
};

const actions = {
  // user login
  login({ commit }, userInfo) {
    const { username, password } = userInfo;
    return new Promise((resolve, reject) => {
      login({
        username: username.trim(),
        password: password
      })
        .then(response => {
          const { data } = response;
          commit('SET_TOKEN', data.token);
          setToken(data.token);
          resolve();
        })
        .catch(error => {
          reject(error);
        });
    });
  },

  // get user info
  getInfo({ commit, state }) {
    return new Promise((resolve, reject) => {
      getInfo()
        .then(response => {
          const { data } = response;
          if (!data) {
            reject('Verification failed, please Login again.');
          }

          const { roles, name, avatar, agent } = data;

          // roles must be a non-empty array
          if (!roles || roles.length <= 0) {
            reject('getInfo: roles must be a non-null array!');
          }

          // console.log('get user info ---------------', roles, name, avatar, agent);

          commit('SET_ROLES', roles);
          commit('SET_NAME', name);
          commit('SET_AVATAR', avatar);
          commit('SET_AGENT', agent);
          resolve(data);
        })
        .catch(error => {
          reject(error);
        });
    });
  },

  // user logout
  logout({ commit, state }) {
    return new Promise((resolve, reject) => {
      removeToken(); // must remove  token  first
      resetRouter();
      commit('RESET_STATE');
      resolve();
    });
  },

  // remove token
  resetToken({ commit }) {
    return new Promise(resolve => {
      removeToken(); // must remove  token  first
      commit('RESET_STATE');
      resolve();
    });
  }
};

export default {
  namespaced: true,
  state,
  mutations,
  actions
};
